The Delta's are significantly more sensitive (3+ db) than the Daytons. with two 410's that difference adds up. OTOH, the Daytons are sufficiently sensitive that they would likely deliver plenty of spl in most venues. The Daytons potentially have deeper bass in a cab of optimum volume and tuning. The Delta's could be EQ'ed to a similar deep bass response if the bass control was peaked below about 70 Hz.

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